*{
    margin:0;
    padding:0;
    box-sizing: border-box;
}

.container-yiyan{
    width: 100vw;
    height: 100vh;
    background: url('http://127.0.0.1:3002/image/random');
    background-size: cover;
    position: relative;
}

.mask{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
}

.content{
    width: 540px;
    height: 160px;
    position:absolute;
    left: 430px;
    top: 180px;
    display:flex;
    flex-direction: column;
    justify-content: space-between;
}

.content{
    font-size: 24px;
    color:white;
    font-family: 'microsoft yahei';
}
.top{
    text-align:left;
}

.text{
    text-align:center;
    letter-spacing: 2px;
}
.bottom{
    text-align: right;
}